title: Three-coordinate gold(I) N-heterocyclic carbene complexes: a new class of strongly luminescent derivatives.
abstract: A selected group of cationic three-coordinate Au(I)-NHC complexes of the form [Au(NHC)(dppbz)]OTf have been prepared from a commercially available bidentate phosphine. All complexes have been fully characterised by NMR and mass spectroscopy. The [Au(NHC)](+) fragment shows a pronounced tendency to form linear complexes which is confirmed by the molecular structure of [Au(IPr)(dppbz)]OTf in the solid state. The complexes are brightly luminescent and present very high quantum yield values in the solid state. The assignments of the electronic transitions involved in the emissions are of a phosphorescent nature and it is proposed that the origin of the emissions is derived from the ligand (dppbz) to metal-ligand (Au-NHC) charge-transfer (LML'CT) transition.
authors.affiliation: Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain. gimeno@unizar.es.
authors.forename: Renso
authors.initials: R
authors.lastname: Visbal
authors.forename: José M
authors.initials: JM
authors.lastname: López-de-Luzuriaga
authors.forename: Antonio
authors.initials: A
authors.lastname: Laguna
authors.forename: M Concepción
authors.initials: MC
authors.lastname: Gimeno